JP7442399B2 - Dishwasher - Google Patents

Description

FIELD OF THE INVENTION The present invention relates to dishwashers.

An example of a conventional dishwasher is disclosed in Patent Document 1. As shown in FIGS. 1 to 4 of Patent Document 1, this dishwasher includes a housing, a washing tank, a door body, and a locking means.

The housing has a housing opening that is open at the front. The cleaning tank is housed within the housing and can accommodate objects to be cleaned. The door body is integrated with the cleaning tank that can be pulled out from the housing, and is provided in front of the cleaning tank. The door body is movable between a closed position where the housing opening is closed and an open position where the housing opening is opened. The locking means switches between a locked state in which the door body is held in the closed position and an unlocked state in which the door body is not held in the closed position.

More specifically, the locking means includes an engaged portion, a swing shaft, an engaging portion, and an operating portion. The engaged portion is provided at the upper end edge of the inner peripheral edge of the housing opening. The swing shaft, the engaging portion, and the operating portion are integrally formed. The swing shaft is swingably supported by the door body. The engaging part is swingable around a swing axis between an engaging position where it can engage with the engaged part and a remote position where it is separated from the engaged part, and the engaging part is pivotable toward the engaged position. Forced. The operating portion swings around the swing shaft in response to a manual operation for switching from the locked state to the unlocked state, and swings the engaging portion from the engaged position to the separated position.

In this dishwasher, when the door body is in the closed position, the engaging part that is biased and swung to the engaging position engages with the engaged part, thereby switching the locking means to the locked state. On the other hand, the operating portion swings in response to manual operation, and the engaging portion swings to the separated position, thereby switching the locking means to the unlocked state.

JP2016-67615A

However, in the above-mentioned conventional dishwasher, it is difficult to reduce the space occupied by the engaging portion for swinging between the engaged position and the separated position, so it is difficult to realize space saving of the locking means.

The present invention has been made in view of the above-mentioned conventional situation, and an object to be solved is to provide a dishwasher that can realize space saving of a locking means.

The dishwasher of the present invention includes a casing having a casing opening that is open at the front;
a cleaning tank that is housed in the housing and is capable of accommodating objects to be cleaned;
a door body provided in front of the cleaning tank, the door body being movable between a closed position for closing the housing opening and an open position for opening the housing opening;
a locking means that switches between a locked state in which the door body is held in the closed position and an unlocked state in which the door body is not held in the closed position;
A dishwasher comprising:
The locking means includes an engaged portion provided on an inner peripheral edge of the housing opening;
It is supported by the door body so as to be movable in a linear manner between an engagement position where it can engage with the engaged portion and a remote position where it is spaced apart from the engaged portion, and is biased toward the engagement position. a linear motion engaging portion;
a swing shaft that is swingably supported by the door body around the swing axis ;
an operating section connected to the swing shaft and swings around the swing axis in response to a manual operation for switching from the locked state to the unlocked state;
is connected to the swing shaft so as to be able to swing integrally with the operating section, and transmits the swinging motion of the operating section to the linear motion engaging section by contacting the linear motion engaging section; a cam portion that causes the linear motion engagement portion to move linearly from the engagement position to the separation position;
It is characterized by having the following.

In the dishwasher of the present invention, when the door body is in the closed position, the locking means is locked by the linearly moving engaging part that is biased and moving directly to the engaging position and engaging the engaged part. Switch to state. On the other hand, the locking means is switched to the unlocked state when the operation part swings in response to manual operation and the linear motion engaging part is moved directly to the separated position by the cam part.

Here, in this dishwasher, the cam part swings together with the operating part, thereby causing the linear motion engagement part to move linearly. The space occupied by the linear motion engagement portion for translation can be made smaller than the space occupied for the engagement portion of the conventional dishwasher to swing.

Therefore, in the dishwasher of the present invention, space saving of the lock means can be realized.

It is desirable that the linear motion engaging portion moves linearly in a linear motion direction along the swing axis. It is desirable that the engaged portion be located on one side of the cam portion in the linear motion direction. The cam part is a curved surface facing opposite to the engaged part in the translational direction and extending in the circumferential direction of the swing axis, and is separated from the engaged part in the translational direction as the swinging progresses. It is desirable to include a cam surface formed in this manner. It is preferable that the linear motion engaging portion includes an abutting portion that can abut the cam surface from the opposite side of the engaged portion in the linear motion direction.

With such a specific configuration, the space occupied by the linear motion engagement portion for translation between the engagement position and the separation position can be further reduced. In addition, with this configuration, when the linear motion engaging part slides into the engaged part and temporarily moves linearly toward the separated position, the contact part only moves away from the cam surface and the operating part does not swing. , it is possible to suppress the generation of abnormal noise from the operating section.

It is desirable that the engaged portion be provided on one of the inner circumferential edges of the housing opening in the left-right direction and a side edge extending in the up-down direction. It is desirable that the direction of translation is the left-right direction. It is preferable that the door body includes a door opening provided on a side surface facing the engaged portion when the door body is in the closed position. It is preferable that the linear motion engaging part protrudes from the door opening and can engage with the engaged part by moving to the engaging position.

When the user moves the door to the open position, it is difficult for the user to look at the side of the door. Therefore, according to this configuration, the door body opening provided on the side surface of the door body and the linear motion engagement portion protruding from the door body opening are difficult to be seen by the user, so it is possible to realize an improvement in design. .

The linear motion engaging portion is a linear motion engaging portion main body that extends in the linear motion direction, and one end in the linear motion direction can engage with the engaged portion; A contact portion that connects to the linear motion engaging portion main body on the side opposite to the engaged portion in the moving direction, changes direction, protrudes toward the engaged portion side in the linear motion direction, and can come into contact with the cam surface. It is desirable that , and include flat plate members formed in a flat plate shape. Further, it is desirable that the operating section and the cam section are integrally formed.

With such a specific configuration, the space occupied by the linear motion engagement portion for translation between the engagement position and the separation position can be further reduced.

It is preferable that the locking means includes a lock detection means that detects whether or not the linear motion engaging portion is in the engagement position by contacting and separating from the linear motion engaging portion . It is desirable that the door body has a support frame that swingably supports the swing shaft . Further, it is desirable that the support frame is integrally formed with a guide part that guides the translation engagement part in the translation direction and a holding part that holds the lock detection means.

In this case, while the operation section is supported by the support frame, the guide section formed on the support frame guides the linear motion of the linear motion engagement section in the translation direction, so the cam swings together with the operation section. It is possible to suppress variations in the positional relationship between the part and the linear motion engaging part. As a result, the cam portion can smoothly transmit the rocking motion of the operating portion to the linear motion engagement portion to linearly move the translation engagement portion. In addition, since the guide part and the holding part are integrally formed on the support frame, even if one of the guide part and the holding part is formed on the support frame, and the other of the guide part and the holding part is formed on a member different from the support frame. Compared to the case where the lock detecting means is formed and assembled together, variations in the positional relationship between the linear motion engaging section guided by the guide section and the lock detecting means held by the holding section can be suppressed. As a result, the lock detection means can accurately detect whether or not the linear motion engagement portion is in the engagement position.

According to the dishwasher of the present invention, space saving of the lock means can be realized.

FIG. 1 is a schematic cross-sectional view of a dishwasher according to an embodiment, showing a state in which the washing tank is in the storage position and the door body is in the closed position. FIG. 2 is a schematic sectional view similar to FIG. 1, showing a state in which the cleaning tank and the door slide forward from the storage position and the door is in the open position. FIG. 3 is a partial perspective view showing the front portion of the cleaning tank, the upper portion of the door body, and the engaged portion of the housing opening. FIG. 4 is a perspective view mainly showing a handle in which an operating section, a swing shaft, and a cam section are integrally formed, a linear motion engaging section, and a support frame that supports them. FIG. 5 is a perspective view showing the handle and the linear motion engagement part. FIG. 6(a) is a partial front view showing a state in which the operating portion is not manually operated and the linear motion engaging portion is in the engagement position, and FIG. 6(b) is a partial front view showing a state in which the operating portion is not manually operated. FIG. 4 is a partial front view showing a state in which the linear motion engaging portion swings in response to a motion and moves linearly to a separated position.

Embodiments embodying the present invention will be described below with reference to the drawings.

(Example)
As shown in FIG. 1, a dishwasher 1 according to the embodiment is an example of a specific embodiment of the dishwasher of the present invention. The dishwasher 1 is a front pull-out type installed below the top plate CT1 of the system kitchen.

In this embodiment, the side facing the housing 9 by the user who uses the system kitchen, that is, the left side in the paper of FIG. Defined as behind. Furthermore, when the user faces the housing 9, the side that comes to the left, that is, the back side in FIG. 1, is defined as the left side of the housing 9, and the side that comes to the right, that is, the front side of Defined as the right side of The front-rear direction, left-right direction, and up-down direction shown in each figure after FIG. 2 are all shown corresponding to FIG. 1.

<Housing, cleaning tank, door body and lid body>
As shown in FIG. 1, the dishwasher 1 includes a housing 9, a washing tank 7, a door body 70, and a lid body 8.

The housing 9 is approximately box-shaped. The top of the housing 9 is covered with a top plate CT1. The housing 9 has a housing opening 9H. The housing opening 9H opens a wide range from the upper end to the lower end of the front part of the housing 9, and allows communication between the inside of the housing 9 and the outside.

As shown in FIGS. 1 to 3, the cleaning tank 7 is approximately box-shaped, and an internal space for cleaning the tableware TW1 is defined by a front wall 7F, left and right side walls, and a rear wall. Further, the cleaning tank 7 has an opening 7H that opens the upper part of the internal space.

The door body 70 is provided at the front of the cleaning tank 7 by being integrally assembled to the front wall 7F of the cleaning tank 7 from the front. The front surface 70F of the door body 70 is a plane extending vertically and horizontally, and constitutes a design surface that is visible to users who use the system kitchen. A door protrusion 78 and a door top cover 79 are provided at the upper end of the door 70 .

The door body protruding portion 78 projects forward and upward from the upper portion of the front surface 70F of the door body 70, extends in the left-right direction, and projects in the left-right direction beyond the left and right ends of the front surface 70F of the door body 70. A recess 78D is formed in the center of the front surface of the door protrusion 78 in the left-right direction so as to be recessed rearward.

As shown in FIG. 4, the door body 70 has a resin support frame 10 provided inside the door protrusion 78. As shown in FIG. The support frame 10 extends in the left-right direction from the left side to the right side of the door protrusion 78 to reinforce the door protrusion 78.

As shown in FIGS. 1 to 3, the door upper surface cover 79 extends in the front-rear direction so as to connect the lower end of the rear surface of the door protrusion 78 and the upper end of the front wall 7F of the cleaning tank 7, and It extends in the left-right direction so as to connect the upper end of the left side surface 71 of the body 70 and the upper end of the right side surface, and covers the door body 70 from above.

The cleaning tank 7 is housed in a housing 9. The position of the cleaning tank 7 shown in FIG. 1 is the storage position. The door body 70 closes the housing opening 9H when the cleaning tank 7 is in the storage position. The position of the door body 70 shown in FIG. 1 is the closed position.

A slide rail mechanism (not shown) is arranged between the left and right side walls of the cleaning tank 7 and the left and right inner wall surfaces of the housing 9. As shown in FIG. 2, the cleaning tank 7 and the door body 70 are slidable with respect to the housing 9 by their slide rail mechanism. The door body 70 opens the housing opening 9H by sliding forward from the housing 9 together with the cleaning tank 7.

Although not shown, by sliding the cleaning tank 7 and the door body 70 further forward of the housing 9 from the position shown in FIG. 2, almost the entire opening 7H of the cleaning tank 7 is exposed from the housing 9. Thus, the door body 70 is in a state where the housing opening 9H is widely opened. The position of the door body 70 shown in FIG. 2 and the position of the door body 70 further slid forward from the position shown in FIG. 2 are defined as open positions.

As shown in FIGS. 1 and 2, the lid 8 is disposed at the upper part of the housing 9 and can close and open the opening 7H of the cleaning tank 7. The lid body 8 is interlocked with the sliding of the cleaning tank 7 by an interlocking mechanism (not shown), and is moved to the position shown in FIG. 1 and after rising from the position shown in FIG. It is designed to move up and down between the two positions.

As shown in FIG. 1, the cleaning tank 7 closes the housing opening 9H and the opening 7H is closed by the lid 8 in the storage position.

As shown in FIG. 2, when the cleaning tank 7 is slid forward from the housing 9, the opening 7H exposed to the outside of the housing 9 is opened by the lid 8 remaining inside the housing 9. Thereby, the user can store the tableware TW1 in the washing tank 7 or take out the tableware TW1 from the washing tank 7 through the opening 7H.

The tableware TW1 is, for example, eating and drinking utensils such as bowls, plates, and glasses, and eating and drinking utensils such as chopsticks, spoons, and forks. The tableware TW1 is an example of the "object to be washed" of the present invention.

As shown in FIG. 1, the housing 9 is provided with a water supply pipe P1, a water supply solenoid valve 69, and a drain pipe P2. The water supply pipe P1 supplies water to the washing tank 7 from a water supply source (not shown) provided outside the dishwasher 1. The water supply electromagnetic valve 69 switches between supplying and stopping water to the cleaning tank 7 by opening and closing the water supply pipe P1. The drain pipe P2 drains the washing water in the washing tank 7 to the outside of the dishwasher 1.

A water storage section 7P is provided at the bottom of the cleaning tank 7 to store cleaning water. Further, inside the washing tank 7, a tableware basket 7C is arranged. The tableware TW1 is placed in the tableware basket 7C.

The cleaning tank 7 is provided with an exhaust passage 7E. The exhaust passage 7E opens at the upper part of the front surface 70F of the door body 70 and communicates with the outside of the cleaning tank 7. The air in the cleaning tank 7 passes through the exhaust passage 7E and is discharged to the outside of the machine, that is, to the front of the casing 9.

<Lock means>
As shown in FIGS. 1 to 6, the dishwasher 1 further includes a locking means 5. The locking means 5 has a structure explained in detail below, and has a locked state in which the door body 70 is held in the closed position while the cleaning tank 7 is in the accommodation position, and an unlocked state in which the door body 70 is not held in the closed position. It is set to switch.

As shown in FIGS. 1 to 3 and 6, the locking means 5 has an engaged portion 95. As shown in FIGS. The engaged portion 95 is provided at the upper part of the side edge 91 extending in the vertical direction on the left side of the inner peripheral edge of the housing opening 9H.

More specifically, as shown in FIG. 3, the side edge 91 of the housing opening 9H is made of a metal member having a substantially W-shaped cross section. The engaged portion 95 is formed at the rear end and upper end of a flat plate-shaped portion that protrudes rearward at the right end of the side edge 91 and extends in the vertical direction.

Note that a part of the cleaning tank 7 and a part of the door body 70 shown by solid lines in FIG. 3 correspond to the positions of the cleaning tank 7 and the door body 70 shown in FIG. 2. A part of the cleaning tank 7 and a part of the door body 70 shown by the two-dot chain line in FIG. 3 correspond to the positions of the cleaning tank 7 and the door body 70 shown in FIG. 1.

The door body 70 includes a door body opening 70H. As shown by the two-dot chain line in FIG. 3, when the cleaning tank 7 is in the storage position and the door body 70 is in the closed position, the upper part of the left side surface 71 of the door body 70 faces the engaged part 95. do. The door opening 70H is a substantially rectangular hole provided in the upper part of the left side surface 71 of the door 70.

Further, the locking means 5 includes a linear motion engaging portion 20 shown in FIGS. 3 to 6, a lock sensor 38 and a biasing spring 39 shown in FIGS. 4 and 6, and FIGS. 1, 2, and 4 to 6. It has a handle 50 shown in FIG. The lock sensor 38 is an example of the "lock detection means" of the present invention.

As shown in FIGS. 4 and 5, the linear motion engagement portion 20 includes a flat plate member in which a translation engagement portion main body 21 and a contact portion 23 are formed into a flat plate shape.

The linear motion engagement portion main body 21 extends in the linear motion direction, which is the left-right direction. The left end of the linear motion engaging portion main body 21 is covered with a cap 25 made of resin. The left side surface of the cap 25 has a curved shape that curves to the right in a substantially arc shape as it goes rearward.

The contact portion 23 is connected to the linear motion engagement portion main body 21 on the opposite side of the engaged portion 95 in the translation direction. The contact portion 23 extends from the right end of the linear motion engagement portion main body 21 so as to change direction forward. Furthermore, the abutting portion 23 extends so as to change direction from the front to the left, and has a substantially semicircular abutting protrusion 23A formed at its left end.

Further, the linear motion engaging portion 20 includes a sensor pressing portion 28 and a spring locking portion 29. The sensor pressing part 28 is formed at the lower end of a plate-shaped piece that branches from the middle part in the left-right direction of the linear motion engagement part main body 21 and projects forwardly, further projects downward and extends in the front-rear direction. The spring locking portion 29 is constituted by a hole and a notch that are formed in the vertically intermediate portion of the plate-like piece and are aligned in the front-rear direction.

In this embodiment, the flat plate member on which the linear motion engaging portion main body 21, the contact portion 23, the sensor pressing portion 28, and the spring locking portion 29 are formed is made of metal. Therefore, the flat plate member can be easily manufactured by punching or pressing a metal plate such as a steel plate.

As shown in FIG. 4, the support frame 10 is integrally formed with guide portions 12A and 12B. The guide portions 12A and 12B are the left portion of the support frame 10 and protrude rearward from positions separated from each other in the left-right direction.

A gate-shaped guide is formed on the upper surface of the guide portion 12A. A portion of the direct-acting engagement portion main body 21 near the cap 25 is inserted into a gate-shaped guide of the guide portion 12A. A pair of front and rear projections are formed on the upper surface of the guide portion 12B. A portion of the linear motion engaging portion main body 21 near the contact portion 23 is sandwiched between a pair of protrusions of the guide portion 12B. The guide portions 12A and 12B guide the linear motion engaging portion 20 in the linear motion direction.

Although not shown in the drawings, a regulating member is provided inside the door body protruding portion 78 to protrude downward from above the guide portions 12A and 12B to regulate the floating of the linear motion engaging portion 20.

The position of the linear motion engaging portion 20 shown in FIGS. 3, 4, and 6(a) is the position at which the linear motion engaging portion 20 has moved most leftward. The position of the linear motion engaging portion 20 shown in FIGS. 3, 4, and 6(a) is defined as an engaging position. The engagement position of the linear motion engagement part 20 is a position where it can engage with the engaged part 95.

As shown in FIG. 3, the left end of the translational engagement portion main body 21 of the translational engagement portion 20 that has moved linearly to the engagement position protrudes from the door opening 70H while being covered by the cap 25. As shown by the two-dot chain line in FIG. 3, when the cleaning tank 7 is in the storage position and the door body 70 is in the closed position, the linear movement engagement part of the linear movement engagement part 20 has moved directly to the engagement position. The left end of the main body 21 engages with the engaged portion 95 with the cap 25 interposed therebetween. FIG. 6A also shows a state in which the left end of the linear motion engaging portion main body 21 engages with the engaged portion 95 with the cap 25 interposed.

When the cleaning tank 7 is in the accommodation position and the door body 70 is in the closed position, the locking means 5 holds the door body 70 in the closed position by moving the linear motion engaging portion 20 directly to the engaging position. Switches to locked state.

The position of the linear motion engaging portion 20 shown in FIG. 6(b) is the position where the linear motion engaging portion 20 has moved most to the right. The position of the linear motion engaging portion 20 shown in FIG. 6(b) is assumed to be a remote position. The separated position of the linear motion engaging portion 20 is a position where the linear motion engaging portion 20 is separated from the engaged portion 95 .

When the linear motion engaging portion 20 moves linearly to the separated position, the locking means 5 is switched to an unlocked state in which the door body 70 is not held in the closed position.

In this way, the translation engagement portion 20 is supported by the support frame 10 of the door body 70 so as to be capable of translation between the engagement position and the separation position.

As shown in FIGS. 4 and 6, a holding portion 18 is integrally formed with the support frame 10. As shown in FIGS. The holding part 18 includes a plate-like piece 18A that projects downward from the guide part 12A, a pair of left and right key pawls 18B that project forward from the plate-like piece, and a positioning shaft 18C.

As shown in FIG. 6, a spring locking portion 19 is integrally formed on the plate-like piece 18A of the support frame 10. As shown in FIG. The spring locking portion 19 is constituted by a rib protruding from the upper and left side of the plate-like piece 18A, and a hole formed to penetrate the rib.

The lock sensor 38 is held by the holding portion 18 of the support frame 10 by a plate-like piece 18A, a pair of left and right key claws 18B, and a positioning shaft 18C. The lock sensor 38 is a microswitch that connects or disconnects a plurality of internal contacts when a detection protrusion 38A provided on the right side is pushed in.

The biasing spring 39 is a tension coil spring whose one end 39A is locked to the spring locking part 29 of the linear motion engaging part 20, and the other end 39B is locked to the spring locking part 19 of the support frame 10. The biasing spring 39 biases the linear motion engagement portion 20 leftward toward the engagement position.

As shown in FIG. 6(a), when the linear motion engaging portion 20 biased by the biasing spring 39 moves linearly to the engagement position, the sensor pressing portion 28 of the linear motion engaging portion 20 presses the lock sensor 38. Push in the detection protrusion 38A. Thereby, the lock sensor 38 detects that the linear motion engagement portion 20 is in the engagement position.

As shown in FIG. 6(b), when the linear motion engaging portion 20 moves linearly to the separated position against the biasing force of the biasing spring 39, the sensor pressing portion 28 of the linear motion engaging portion 20 is pressed against the lock sensor 38. away from the detection protrusion 38A. Thereby, the lock sensor 38 detects that the linear motion engagement portion 20 is not in the engagement position.

As shown in FIGS. 4 and 5, the handle 50 is a single resin member in which an operating portion 51, a swing shaft 52, and a cam portion 53 are integrally formed. The handle 50 can be easily manufactured by injection molding of thermoplastic resin or the like.

The swing shaft 52 is a cylindrical shaft centered on a swing axis X50 that extends in the left-right direction. The translation direction of the translation engagement portion 20 is a direction along the swing axis X50.

As shown in FIG. 4, wall portions 17A and 17B are formed in the center of the support frame 10 in the left-right direction so as to protrude upward and extend in a flat plate shape in the front-rear direction. The front portions of the wall portions 17A and 17B constitute the left and right inner walls of the recess 78D of the door protrusion 78. The rear portions of the walls 17A and 17B support the swing shaft 52 rotatably around the swing axis X50 by semicircular recesses.

Wall portions 17C and 17D are formed in parallel to the wall portions 17A and 17B on the outer side of the support frame 10 in the left-right direction than the wall portions 17A and 17B. The walls 17C and 17D position the swing shaft 52 by sandwiching the swing shaft 52 in the left-right direction.

Although not shown in the drawings, inside the door body protrusion 78 there is a rocking shaft 52 that protrudes downward from above the walls 17A, 17B toward the semicircular recesses of the walls 17A, 17B. A regulating member is provided to regulate lifting.

In this way, the operating section 51 and the cam section 53, which are integrally formed on the swing shaft 52, are swingably supported by the support frame 10 of the door body 70.

The operating portion 51 is connected to the swing shaft 52 in a range sandwiched between the walls 17A and 17B of the support frame 10 in the left-right direction. The operating portion 51 has a curved shape that extends upward and forward from the swing shaft 52 and then changes direction downward.

As shown in FIG. 1, the operating portion 51 is disposed within the recess 78D of the door protrusion 78. As shown in FIG. 2, the operating section 51 is operated manually by the user to switch the locking means 5 from the locked state to the unlocked state, that is, by inserting a hand into the recess 78D and pushing up the front end of the operating section 51. In response to a gripping operation, it swings around the swing axis X50 in the operating direction R1.

As shown in FIGS. 4 and 5, the cam portion 53 is connected to the left end of the swing shaft 52. As shown in FIGS. The cam portion 53 protrudes downward and rearward from the swing shaft 52, and includes a cam surface 53A formed at its tip.

As shown in FIGS. 5 and 6, the cam surface 53A is a curved surface that faces opposite to the engaged portion 95 in the translational direction, that is, to the right, and extends in the circumferential direction of the swing axis X50. The rear end 53A2 of the cam surface 53A is spaced to the right with respect to the front end 53A1 of the cam surface 53A so as to be spaced apart from the engaged portion 95 in the translational direction.

That is, the cam surface 53A extends in the circumferential direction of the swing axis X50 while being inclined with respect to the swing axis X50. As shown in FIGS. 6(a) and 6(b), the cam surface 53A moves toward the engaged portion in the linear motion direction as the operating portion 51 swings in the operating direction R1 in response to the user's manual operation. 95.

The contact protrusion 23A of the linear motion engaging portion 20 can contact the cam surface 53A from the opposite side to the engaged portion 95 in the translational direction, that is, from the right side.

As shown in FIG. 6(a), when the operation section 51 is not manually operated and is not oscillating, the abutment protrusion 23A of the linear motion engagement section 20 in the engagement position is on the cam surface 53A. It is in contact with the front end 53A1 of.

As shown in FIG. 6(b), when the operating portion 51 is manually operated and swings in the operating direction R1, the abutment protrusion 23A of the linear motion engaging portion 20 moves from the front end 53A1 to the rear end 53A2 of the cam surface 53A. It is pushed to the right while slidingly contacting the cam surface 53A, and stops when it comes into contact with the rear end 53A2 of the cam surface 53A. In this way, the cam portion 53 transmits the rocking motion of the operating portion 51 to the linear motion engagement portion 20 via the cam surface 53A and the contact protrusion 23A of the contact portion 23, and engages the linear motion engagement portion 20. Directly move from position to remote position. As a result, the locking means 5 switches from the locked state to the unlocked state.

Furthermore, when the operating section 51 is no longer manually operated in the state shown in FIG. 6(b), the linear motion engaging section 20 biased by the biasing spring 39 is moved to the separated position, as shown in FIG. 6(a). It moves directly from the position to the engaged position. As a result, the locking means 5 switches from the unlocked state to the locked state. At this time, the contact protrusion 23A of the linear motion engaging portion 20 slides from the rear end 53A2 of the cam surface 53A toward the front end 53A1 while pushing the cam surface 53A to the left, and comes into contact with the front end 53A1 of the cam surface 53A. It stops in the state. In this way, the cam portion 53 transmits the linear motion of the linear motion engaging portion 20 to the engagement position to the operating portion 51 via the contact protrusion 23A of the contact portion 23 and the cam surface 53A, and Return to original position.

Furthermore, from the state where the cleaning tank 7 and the door body 70 have slid forward from the housing 9 as shown by the solid line in FIG. When sliding the cleaning tank 7 backward to return it to the storage position as shown by the two-dot chain line in FIG. It will be done. As a result, the translational engaging portion 20 moves linearly toward the separated position against the biasing force of the biasing spring 39, and after the cap 25 moves rearward relative to the engaged portion 95, the biasing spring 39 and returns to the engagement position. At this time, since the contact protrusion 23A of the contact portion 23 only temporarily moves away from the front end 53A1 of the cam surface 53A to the right, the operating portion 51 does not swing.

<Nozzle and pump>
As shown in FIG. 1, the dishwasher 1 further includes a nozzle 61 and a pump 62. The nozzle 61 and the pump 62 are an example of the "cleaning device" of the present invention. Nozzle 61 is arranged within cleaning tank 7 . The pump 62 is assembled to the lower part of the water storage section 7P of the cleaning tank 7. The nozzle 61 and the pump 62 move together with the cleaning tank 7 when the cleaning tank 7 slides with respect to the housing 9 .

The nozzle 61 can inject cleaning water into the cleaning tank 7 from a plurality of discharge holes. The spray direction of the nozzle 61 changes in various directions in order to reliably wash the plurality of dishes TW1 stacked in the washing tank 7, and to wash the inner wall surface of the washing tank 7 and the dish basket 7C. It looks like this.

During forward rotation, the pump 62 supplies the cleaning water stored in the water storage section 7P of the cleaning tank 7 to the nozzle 61 and injects it into the cleaning tank 7. The injected cleaning water is stored in the water storage portion 7P and is repeatedly supplied to the nozzle 61 by the pump 62. Further, during reverse operation, the pump 62 drains the washing water in the washing tank 7 to the outside of the dishwasher 1 via the leftover filter 67 and the drain pipe P2.

<Heater, temperature sensor, drying fan, and water level sensor>
The dishwasher 1 further includes a heater 63, a drying fan 68, a temperature sensor 31, and a water level sensor 34.

A heater 63, a drying fan 68, a temperature sensor 31, and a water level sensor 34 are also assembled in the cleaning tank 7, and move together with the cleaning tank 7 when the cleaning tank 7 slides relative to the housing 9.

The heater 63 is arranged at the bottom of the water storage section 7P. The heater 63 heats the cleaning water stored in the water storage portion 7P of the cleaning tank 7 or the air within the cleaning tank 7.

The drying fan 68 rotates with the heater 63 activated to send heated air into the washing tank 7 to dry the tableware TW1. The air sent into the washing tank 7 by the drying fan 68 is exhausted to the outside of the dishwasher 1 via the exhaust passage 7E.

The temperature sensor 31 is provided at a position below the heater 63 at the bottom of the water storage section 7P. The temperature sensor 31 detects the temperature of the cleaning water stored in the water storage portion 7P of the cleaning tank 7 or the temperature of the air in the cleaning tank 7 near the heater 63.

The water level sensor 34 is a float type sensor provided in a water level detection tank 34A disposed next to the water storage portion 7P of the cleaning tank 7. The water level detection tank 34A is connected to the water storage section 7P of the cleaning tank 7 via a communication pipe P3. Water level sensor 34 detects the level of cleaning water in cleaning tank 7 .

<Control unit and input/output unit>
The dishwasher 1 further includes a control section C1 and an input/output section 40. The control unit C1 is arranged below the door body protrusion 78 and the door top cover 79 in the door body 70. The input/output unit 40 is arranged on the upper surface of the door protrusion 78. The control unit C1 and the input/output unit 40 move together with the cleaning tank 7 when the cleaning tank 7 slides with respect to the housing 9.

The control unit C1 includes a CPU (not shown), a memory constituted by storage elements such as ROM and RAM, an interface circuit that transmits and receives signals to and from a controlled object, and a power supply circuit that controls power supply to the controlled object. This is an electronic circuit unit that includes: The memory stores programs, setting information, etc. for operating the dishwasher 1.

The control unit C1 controls and operates the nozzle 61, the pump 62, the heater 63, the drying fan 68, etc., and receives detection signals from the temperature sensor 31, the water level sensor 34, and the lock sensor 38. The control unit C1 also receives a detection signal from sensors (not shown), such as a position sensor that detects whether the cleaning tank 7 is in the accommodation position.

As shown in FIG. 3, the input/output unit 40 has a plurality of buttons and the like for the user to perform input operations. The input/output unit 40 also has a display panel capable of displaying numbers, characters, etc. in order to convey various information to the user. The input/output unit 40 transmits user input operations to the control unit C1, and displays information transmitted from the control unit C1.

As shown in FIG. 1, when the cleaning tank 7 is in the storage position, the entire input/output unit 40 is hidden by the top plate CT1 of the system kitchen. Therefore, the user cannot operate or visually recognize the input/output section 40. As shown in FIG. 2, the cleaning tank 7 and the door body 70 slide forward from the housing 9, and the entire input/output unit 40 moves forward of the system kitchen top plate CT1, allowing the user to enter the system. The output unit 40 can now be operated and visually recognized.

<Cleaning operation>
In the dishwasher 1 having the above configuration, a cleaning operation is performed in the following steps. That is, in order to accommodate the tableware TW1 to be washed in the washing tank 7, when the user inserts his/her hand into the recess 78D of the door body protrusion 78 and performs a manual operation of pushing up and grasping the front end of the operation part 51, the linear motion The engaging portion 20 moves directly from the engaging position shown in FIG. 6(a) to the separated position shown in FIG. 6(b), and the locking means 5 switches from the locked state to the unlocked state. As a result, the user can slide the cleaning tank 7 and the door body 70 forward from the housing 9.

Then, after the user stores the tableware TW1 in the pulled-out washing tank 7 and operates the input/output unit 40 to instruct the start of the washing operation, the user pushes the door body 70 backward to open the washing tank 7 as shown in FIG. Slide it towards the storage position.

Then, the cap 25 of the linear motion engaging portion 20 is pushed to the right while slidingly contacting the right end of the side edge 91. As a result, the translational engaging portion 20 moves linearly toward the separated position against the biasing force of the biasing spring 39, and after the cap 25 moves rearward relative to the engaged portion 95, the biasing spring 39 and returns to the engagement position. As a result, the locking means 5 switches from the unlocked state to the locked state. At this time, the contact protrusion 23A of the contact portion 23 is only temporarily separated from the cam surface 53A, and the operating portion 51 does not swing, so that generation of abnormal noise from the operating portion 51 can be suppressed.

The control unit C1 then sets the condition that the cleaning tank 7 is detected to be in the storage position by a position sensor (not shown) and that the linear motion engagement part 20 is detected to be in the engagement position by the lock sensor 38. As a result, the nozzle 61 and the pump 62 are operated to perform a cleaning operation in which cleaning water is injected from the nozzle 61 into the cleaning tank 7 . Then, the control unit C1 operates the heater 63 and the drying fan 68 as appropriate in accordance with the progress of the washing operation to thoroughly wash the tableware TW1 in the washing tank 7, and then dries the tableware TW1 and cleans the tableware TW1. Finish the operation.

<Effect>
In the dishwasher 1 of the embodiment, when the door body 70 is in the closed position shown in FIG. 1, it is biased by the biasing spring 39 and moved directly to the engagement position as shown in FIG. 6(a). When the linear motion engaging portion 20 engages with the engaged portion 95, the locking means 5 is switched to the locked state. On the other hand, as shown in FIG. 6(b), when the operation part 51 receives manual operation and swings in the operation direction R1, the linear motion engagement part 20 is linearly moved to the separated position by the cam part 53. The locking means 5 is switched to the unlocked state.

Here, in this dishwasher 1, the cam portion 53 swings integrally with the operating portion 51, thereby causing the linear motion engagement portion 20 to move linearly. The space occupied by the linear motion engagement portion 20 for translation between the engagement position and the separation position (particularly the space occupied in the front-back direction and the vertical direction) is the space occupied by the engagement portion of the conventional dishwasher described above. It can be made smaller than the space required for swinging between the aligned position and the separated position.

Specifically, in this dishwasher 1, as shown in FIGS. 1 to 3, the locking means 5 does not protrude behind the door protrusion 78 and above the door top cover 79.

Therefore, in the dishwasher 1 of the embodiment, space saving of the lock means 5 can be realized. In addition, by reducing the space occupied by the linear motion engagement portion 20 (especially the space occupied in the front-rear direction and vertical direction), the internal space for washing the tableware TW1 partitioned into the washing tank 7 can be enlarged. can do.

Moreover, in this dishwasher 1, as shown in FIGS. 5 and 6, the linear motion engaging portion 20 linearly moves in a linear motion direction along the swing axis X50. The cam portion 53 includes a cam surface 53A extending from one end 53A1 to the other end 53A2. The cam surface 53A is a curved surface that faces the opposite side from the engaged portion 95 in the translational direction, that is, to the right, and extends in the circumferential direction of the swing axis X50. Further, the cam surface 53A is formed to move away from the engaged portion 95 to the right in the translational direction as the operating portion 51 swings in the operating direction R1. The linear motion engagement portion 20 includes a contact portion 23 . The contact portion 23 can contact the cam surface 53A from the side opposite to the engaged portion 95 in the linear motion direction, that is, from the right side, by the contact projection 23A. With such a specific configuration, it is possible to further reduce the space occupied by the translational engagement portion 20 for translation between the engagement position and the separation position. Furthermore, with this configuration, even if the cap 25 slides into contact with the side edge 91 and the linear motion engaging portion 20 temporarily moves linearly toward the separated position when the cleaning tank 7 is returned to the storage position, the contact does not occur. The abutment protrusion 23A of the portion 23 is only temporarily separated from the cam surface 53A, and the operating portion 51 does not swing. As a result, in this dishwasher 1, generation of abnormal noise from the operating section 51 can be suppressed.

Further, in this dishwasher 1, as shown in FIG. 3, the engaged portion 95 is provided on a side edge 91 extending in the vertical direction on the left side of the inner peripheral edge of the housing opening 9H. The translation direction of the translation engagement portion 20 is the left-right direction. The door body 70 includes a door body opening 70H provided on a side surface 71 facing the engaged portion 95 in the closed position. By moving to the engagement position, the linear motion engagement portion 20 can protrude from the door opening 70H and engage with the engaged portion 95. When the user moves the door body 70 to the open position, it is difficult for the user to look at the side surface 71 of the door body 70. Therefore, according to this configuration, the door body opening 70H provided on the side surface 71 of the door body 70 and the linear motion engaging portion 20 protruding from the door body opening 70H are difficult to be visually recognized by the user, so that the design is improved. It is possible to achieve improvements in

Further, in this dishwasher 1, the linear motion engagement portion 20 includes a flat plate member in which the translation engagement portion main body 21 and the contact portion 23 are formed into a flat plate shape. Furthermore, the operating section 51 and the cam section 53 are integrally formed. With such a specific configuration, the space occupied by the linear motion engagement portion 20 for translation between the engagement position and the separation position can be further reduced. Furthermore, since the flat plate member on which the linear motion engaging portion main body 21 and the contact portion 23 are formed is made of metal, the linear motion engaging portion 20, which requires strength, can be formed by punching or pressing a metal plate. Easy to manufacture. Further, since the operating section 51 and the cam section 53 are made of resin, the operating section 51 and the cam section 53 having complicated shapes can be easily manufactured by injection molding or the like. As a result, manufacturing costs can be reduced.

Furthermore, in this dishwasher 1, as shown in FIGS. 4 and 6, the lock means 5 has a lock sensor 38. The door body 70 has a support frame 10. The support frame 10 is integrally formed with guide parts 12A and 12B that guide the translation engagement part 20 in the translation direction, and a holding part 18 that holds the lock sensor 38. With this configuration, while the operation part 51 is supported by the support frame 10, the guide parts 12A and 12B formed in the support frame 10 guide the translational movement of the translational engagement part 20 in the translational direction. Variations in the positional relationship between the cam portion 53, which swings integrally with the portion 51, and the linear motion engaging portion 20 can be suppressed. As a result, the cam portion 53 can smoothly transmit the rocking motion of the operating portion 51 to the linear motion engaging portion 20 to cause the linear motion engaging portion 20 to move linearly. Moreover, since the guide parts 12A, 12B and the holding part 18 are integrally formed in the support frame 10, if one of the guide parts 12A, 12B and the holding part 18 is formed in the support frame 10, then the guide parts 12A, 12B and the sensor pressing portion 28 of the linear motion engagement portion 20 guided by the guide portions 12A and 12B, compared to the case where the other of the holding portions 18 is formed as a member different from the support frame 10 and assembled together; Variations in the positional relationship between the lock sensor 38 held by the holding portion 18 and the detection protrusion 38A can be suppressed. As a result, the lock sensor 38 can accurately detect whether the linear motion engagement portion 20 is in the engagement position. Furthermore, the configuration in which the guide sections 12A, 12B, the holding section 18, and the spring locking section 19 are integrally formed on the resin support frame 10 that supports the operating section 51 reduces the number of parts, thereby reducing manufacturing costs. can be realized.

Although the present invention has been described above based on examples, it goes without saying that the present invention is not limited to the above-mentioned examples, and can be applied with appropriate modifications without departing from the spirit thereof.

In the embodiment, the operating portion 51 and the cam portion 53 are one member, but the present invention is not limited to this configuration. For example, a cam portion, which is a separate member, may be assembled to the operating portion.

In the embodiment, the translation direction of the translation engagement portion 20 is the left-right direction, but the present invention is not limited to this configuration. For example, the translation direction of the translation engagement portion may be the vertical direction.

In the embodiment, in the locking means 5, the engaged portion 95 is provided on a side edge 91 extending in the vertical direction on the left side of the inner peripheral edge of the housing opening 9H. Correspondingly, a pair of linear motion engaging portions 20 and cam portions 53 are provided, but the present invention is not limited to this configuration. For example, an engaged portion may be provided on the right side edge of the inner peripheral edge of the housing opening 9H that extends in the vertical direction in the same manner as the engaged portion 95, and a separate section may be provided corresponding to the engaged portion. You may provide one set of a linear motion engagement part and a cam part similarly to the linear motion engagement part 20 and the cam part 53.

In the embodiment, the dishwasher 1 is of a pull-out type in which the door body 70 is slid forward from the housing 9 together with the washing tank 7, but the present invention is not limited to this configuration. For example, the present invention also includes a front-open type dishwasher in which only the door body is pulled forward.

The present invention can be used, for example, in dishwashers or kitchen equipment.

1... Dishwasher 9H... Housing opening 9... Housing TW1... Items to be washed (tableware)
7...Cleaning tank 70...Door body 5...Lock means 95...Engaged part 20...Linear motion engaging part Side edge of the housing opening 71...Side surface facing the engaged portion in the closed position of the door body 70H...Gate body opening 21...Linear motion engagement part main body 38...Lock detection means (lock sensor)
39...Biasing spring 39A...One end of biasing spring 10...Support frame 12A, 12B...Guiding part 18...Holding part 39B...Other end of biasing spring 19...Spring locking part

Claims (5)

a casing having a casing opening that is open at the front;
a cleaning tank that is housed in the housing and is capable of accommodating objects to be cleaned;
a door body provided in front of the cleaning tank, the door body being movable between a closed position for closing the housing opening and an open position for opening the housing opening;
a locking means that switches between a locked state in which the door body is held in the closed position and an unlocked state in which the door body is not held in the closed position;
A dishwasher comprising:
The locking means includes an engaged portion provided on an inner peripheral edge of the housing opening;
It is supported by the door body so as to be movable in a linear manner between an engagement position where it can engage with the engaged portion and a remote position where it is spaced apart from the engaged portion, and is biased toward the engagement position. a linear motion engaging portion;
a swing shaft that is swingably supported by the door body around the swing axis ;
an operating section connected to the swing shaft and swings around the swing axis in response to a manual operation for switching from the locked state to the unlocked state;
is connected to the swing shaft so as to be able to swing integrally with the operating section, and transmits the swinging motion of the operating section to the linear motion engaging section by contacting the linear motion engaging section; a cam portion that causes the linear motion engagement portion to move linearly from the engagement position to the separation position;
A dishwasher characterized by having: The linear motion engaging portion moves linearly in a linear motion direction along the swing axis,
The engaged portion is located on one side of the linear motion direction than the cam portion,
The cam portion is a curved surface facing opposite to the engaged portion in the translational direction and extending in the circumferential direction of the swing axis, and as the swinging progresses, the cam portion faces the opposite side from the engaged portion in the translational direction. including a cam surface formed to be spaced apart from the engaged portion;
The dishwasher according to claim 1, wherein the translational engaging portion includes an abutting portion that can come into contact with the cam surface from a side opposite to the engaged portion in the translational direction. The engaged portion is provided at a side edge extending in the vertical direction on one of the left and right sides of the inner peripheral edge of the housing opening,
The linear motion direction is the left-right direction,
The door body includes a door body opening provided on a side surface facing the engaged portion in the closed position,
The dishwasher according to claim 2, wherein, by moving to the engagement position, the linear motion engagement portion protrudes from the door opening and becomes capable of engaging with the engaged portion. The linear motion engagement portion is a translation engagement portion main body that extends in the translation direction, and the one end in the translation direction is engageable with the engaged portion. A coupling part main body is connected to the linear motion engaging part main body on a side opposite to the engaged part in the translational direction, changes direction, and protrudes toward the engaged part side in the translational direction. the abutting portion capable of abutting against the cam surface includes a flat plate member formed in a flat plate shape;
The dishwasher according to claim 2 or 3, wherein the operating section and the cam section are integrally formed. The locking means includes a lock detection means that detects whether the linear motion engagement part is in the engagement position by contacting and separating from the translation engagement part,
The door body has a support frame that swingably supports the swing shaft,
Any one of claims 2 to 4, wherein the support frame is integrally formed with a guide portion that guides the linear motion engaging portion in the linear motion direction and a holding portion that holds the lock detection means. Dishwasher according to item 1.

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